Sunscreen is a key element of daily skincare. Understanding what SPF is, the different types, and which sunscreen will be suitable for us can help avoid many skin problems.
What is SPF?
SPF, or Sun Protection Factor, is an indicator that informs us how long we can be in the sun without the risk of sunburn compared to the time without using a sunscreen. The SPF numbers (e.g., SPF 15, SPF 30, SPF 50) indicate the level of protection against UVB radiation, which is the main cause of sunburn.
How does SPF work?
SPF works by absorbing, reflecting, or scattering UV radiation. For example, a sunscreen with SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98%.
What are the types of SPF filters?
SPF filters can be divided into two main categories: chemical and physical. Understanding their characteristics can help us decide which sunscreen will be most suitable for us.
Chemical filters
Chemical filters contain ingredients that absorb UV radiation and convert it into heat, which is then released from the skin. Popular ingredients include oxybenzone, avobenzone, and octinoxate.
Physical filters
Physical (mineral) filters contain substances such as zinc oxide and titanium dioxide, which reflect and scatter UV radiation. They are especially recommended for people with sensitive skin and for children.
What do the SPF numbers mean?
Duration of Protection
SPF numbers indicate how long the filter protects the skin from burning compared to no protection. For example, if skin normally starts to burn after 10 minutes in the sun, using SPF 30 theoretically extends that time 30 times, or up to 300 minutes.
Effectiveness of Protection
The difference in effectiveness between SPF 30 and SPF 50 may seem small, but for people with fair skin or a tendency to burn, it can be significant. SPF 30 blocks about 97% of UVB rays, while SPF 50 blocks about 98%.
Which sunscreen to choose?
Choosing the right sunscreen depends on several factors, such as skin type, daily activities, and personal preferences.
Skin Type
People with sensitive skin should opt for mineral filters, which are less irritating. Oily skin can benefit from lightweight, non-greasy formulas that won't clog pores. For dry skin, moisturizing creams with added SPF protection are recommended.
Activity Level
If you are active and spend a lot of time outdoors, choose waterproof creams with a high SPF. For everyday use, especially if you are mostly indoors, SPF 15-30 should be sufficient.
Additional Benefits
Many modern sunscreens offer additional benefits, such as antioxidants that protect the skin from free radicals and anti-aging ingredients that help maintain a youthful appearance.
When and which SPF to use?
Choosing the right SPF depends not only on your skin type but also on the circumstances.
Everyday Use
For everyday use, when you are mostly indoors, SPF 15-30 will be sufficient. However, it's important to remember to reapply the sunscreen regularly, especially if you are outside for extended periods.
Outdoor Activities
During outdoor activities such as walking, running, or working outside, it's recommended to use higher SPF, such as SPF 30-50. It's important to apply the cream every two hours and after any contact with water or intense sweating.
Holidays and Beach
During holidays and extended sun exposure, especially at the beach, a higher SPF is advisable. It's also essential to consider sun protection for children, whose skin is particularly sensitive to UV radiation.
At Project Beauty Clinic, we always apply SPF 50 after each treatment. Why? Because the skin is particularly sensitive after procedures and requires maximum protection. SPF 50 provides the best possible barrier against harmful UV radiation, which is crucial for proper healing and maintaining the results of the treatments.
Summary
Choosing the right SPF is crucial for protecting the skin from harmful UV radiation. Whether you spend most of your time indoors or outdoors, it's important to adjust the level of protection to your needs and conditions. Remember to always carry sunscreen and apply it regularly to enjoy healthy and beautiful skin.
Comments